Identification of a novel toxicophore in anti-cancer chemotherapeutics that targets mitochondrial respiratory complex I
摘要:
线粒体功能的破坏会选择性地针对依赖氧化磷酸化的肿瘤细胞。然而,由于心脏细胞对能量的需求很高,它们不成比例地成为线粒体毒素的目标,导致心脏功能丧失。对姆布利替尼对心脏细胞影响的分析表明,这种药物并不像报道的那样抑制HER2,而是直接抑制线粒体呼吸复合体I,降低心脏细胞的搏动率,长期接触会导致细胞死亡。我们使用了一个 mubritinib 化学变体库,结果表明对 1H-1,2,3-三唑进行修饰可改变复合体 I 的抑制作用,并确定杂环 1,3- 氮基团为毒性分子。在第二种抗癌疗法羧基氨基三唑(CAI)中也存在相同的毒性团,我们证明 CAI 也是通过毒性团介导的复合物 I 抑制作用发挥作用的。复合体 I 抑制作用与抗癌细胞活性直接相关,而毒性团的修饰会削弱这些化合物对癌细胞增殖和凋亡的预期作用。
Silica-coated Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles-supported sulfonic acid as a highly active and reusable catalyst in chemoselective deprotection of tert-butyldimethylsilyl (TBDMS) ethers
employed in the deprotection of TBDMS ethers. The prepared magnetically separable nanocatalyst exhibited efficient catalytic activity with high conversion and selectivity in cleavage of TBDMS ethers. TBDMS ethers are efficiently cleaved to the corresponding hydroxyl compounds in methanol solution containing 2 mol% magnetic nano-catalysts. Good to excellent yields of products, simple work-up and product
Compounds provided herein function as thyromimetics and have utility for treating diseases such as neurodegenerative disorders and fibrotic diseases. Pharmaceutical compositions containing such compounds are also provided, as are methods of their preparation.
[EN] NOVEL COMPOSITIONS AND PROCESSES FOR PREPARING 5-AMINO OR SUBSTITUTED AMINO 1,2,3-TRIAZOLES AND TRIAZOLE OROTATE FORMULATIONS<br/>[FR] NOUVELLES COMPOSITIONS ET PROCÉDÉS DE PRÉPARATION DE 5-AMINO OU AMINO SUBSTITUÉ 1,2,3-TRIAZOLES ET DE FORMULATIONS D'OROTATE DE TRIAZOLE
申请人:TACTICAL THERAPEUTICS INC
公开号:WO2011028288A1
公开(公告)日:2011-03-10
New polymorphs of 5-amino or substituted amino 1, 2, 3-triazole and substituted derivatives thereof, of orotates of the carboxyamidotriazoles, of formulations of the triazoles and orotic acid in the ratio of 1:1 to 1:4 (base:acid) and of safer processes of the preparation of the same are disclosed. The compounds are useful in the control and treatment of diseases including, but not limited to solid cancers, macular degeneration, retinopathy, chronic myeloid leukemia, AIDS and diseases which rely on aberrant signal transduction. The improved processes to prepare the orotate formulations use stable, efficient and safer starting azide intermediate materials in the synthesis of new polymorphs of carboxyamidotriazole.
Novel compositions and processes for preparing 5-amino or substituted amino 1,2,3-triazoles and triazoles orotate formulations
申请人:Karmali Rashida A.
公开号:US20140200247A1
公开(公告)日:2014-07-17
New polymorphs of 5-amino or substituted amino 1,2,3-triazole and substituted derivatives thereof, of orotates of the carboxyamidotriazoles, of formulations of the triazoles and orotic acid in the ratio of 1:1 to 1:4 (base:acid) and of safer processes of the preparation of the same are disclosed. The compounds are useful in the control and treatment of diseases including, but not limited to solid cancers, macular degeneration, retinopathy, chronic myeloid leukemia, AIDS and diseases which rely on aberrant signal transduction. The improved processes to prepare the orotate formulations use stable, efficient and safer starting azide intermediate materials in the synthesis of new polymorphs of carboxyamidotriazole.
Novel 5-amino or substituted amino 1,2,3-triazoles are disclosed as having anticoccidial activity. The compounds are useful for controlling coccidiosis when administered in minor quantities to animals, in particular to poultry, usually in admixture with animal sustenance.